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        data-chapter-title="第八节：APP对象"
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                        Introduction
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                            <b>1.</b>
                        
                        第一章：小程序前奏
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                            <b>1.1.</b>
                        
                        第一节：认识小程序
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                            <b>1.2.</b>
                        
                        第二节：准备工作
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                            <b>1.3.</b>
                        
                        第三节：开发工具介绍
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                            <b>1.4.</b>
                        
                        第六节：WXSS语法
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                            <b>2.</b>
                        
                        第二章：小程序基础
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                            <b>2.1.</b>
                        
                        第一节：项目结构
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                            <b>2.2.</b>
                        
                        第二节：配置
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                            <b>2.3.</b>
                        
                        第三节：WXML语法
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                            <b>2.4.</b>
                        
                        第五节：事件
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                            <b>2.5.</b>
                        
                        第六节：WXSS语法
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                            <b>2.6.</b>
                        
                        第七节：flex布局
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                            <b>2.7.</b>
                        
                        第八节：APP对象
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                    <a href="../di-er-zhang-ff1a-kai-fa-zhun-bei-gong-zuo/di-jiu-jie-ff1a-page-dui-xiang.html">
                
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                            <b>2.8.</b>
                        
                        第九节：Page对象
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                            <b>2.9.</b>
                        
                        第十节：WXS语法
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                            <b>3.</b>
                        
                        第三章：常用组件
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                            <b>3.1.</b>
                        
                        第一节：scroll-view组件
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                            <b>3.2.</b>
                        
                        第二节：swiper组件
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                            <b>3.3.</b>
                        
                        第三节：movable-view组件
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                            <b>3.4.</b>
                        
                        第四节：icon组件
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                            <b>3.5.</b>
                        
                        第五节：text组件
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                            <b>3.6.</b>
                        
                        第六节：input组件
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                            <b>3.7.</b>
                        
                        自定义组件
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            <span><b>4.</b> 第四章：小程序API</span>
            
            
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                            <b>4.1.</b>
                        
                        第一节：网络请求API
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        <li class="chapter " data-level="5" data-path="di-liu-zhang-ff1a-es6-yu-fa.html">
            
                
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                            <b>5.</b>
                        
                        第五章：ES6语法
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        <li class="chapter " data-level="5.1" data-path="di-liu-zhang-ff1a-es6-yu-fa/di-yi-jie-ff1a-shi-yao-shi-es6-yu-fa.html">
            
                
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                            <b>5.1.</b>
                        
                        第一节：什么是ES6语法
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        <li class="chapter " data-level="5.2" data-path="di-liu-zhang-ff1a-es6-yu-fa/di-er-jie-ff1a-es6-yu-fa.html">
            
                
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                            <b>5.2.</b>
                        
                        第二节：定义变量
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                            <b>5.3.</b>
                        
                        第三节：函数
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                            <b>5.4.</b>
                        
                        第四节：类
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                            <b>5.5.</b>
                        
                        第五节：模块
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                            <b>6.</b>
                        
                        第六章：云开发
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                            <b>6.1.</b>
                        
                        第一节：什么是云开发
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        <li class="chapter " data-level="6.2" data-path="di-er-jie-ff1a-zhu-ce-wei-xin-xiao-cheng-xu.html">
            
                
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                            <b>6.2.</b>
                        
                        第二节：注册微信小程序
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        <li class="chapter " data-level="6.3" data-path="di-san-jie-ff1a-kai-tong-yun-kai-fa.html">
            
                
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                            <b>6.3.</b>
                        
                        第三节：开通云开发
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        <li class="chapter " data-level="6.4" data-path="di-si-jie-ff1a-shu-ju-ku.html">
            
                
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                            <b>6.4.</b>
                        
                        第四节：数据库准备
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        <li class="chapter " data-level="6.5" data-path="di-wu-jie-ff1a-shu-ju-ku-cao-zuo.html">
            
                
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                            <b>6.5.</b>
                        
                        第五节：数据库操作
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        <li class="chapter " data-level="6.6" data-path="di-liu-jie-ff1a-command-zhi-ling.html">
            
                
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                            <b>6.6.</b>
                        
                        第六节：command指令
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        <li class="chapter " data-level="6.7" data-path="di-qi-jie-ff1a-gao-ji-cha-xun.html">
            
                
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                            <b>6.7.</b>
                        
                        第七节：高级查询
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        <li class="chapter " data-level="6.8" data-path="di-ba-jie-ff1a-wen-jian-shang-chuan.html">
            
                
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                            <b>6.8.</b>
                        
                        第八节：文件操作
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        <li class="chapter " data-level="6.9" data-path="di-jiu-jie-ff1a-node-huan-jing-da-jian.html">
            
                
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                            <b>6.9.</b>
                        
                        第九节：node环境搭建
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        <li class="chapter " data-level="6.10" data-path="di-shi-jie-ff1a-yun-han-shu.html">
            
                
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                            <b>6.10.</b>
                        
                        第十节：云函数
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        <li class="chapter " data-level="6.11" data-path="di-shi-yi-jie-ff1a-yun-han-shu-jian-ce-nei-rong-an-quan.html">
            
                
                    <a href="../di-shi-yi-jie-ff1a-yun-han-shu-jian-ce-nei-rong-an-quan.html">
                
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                            <b>6.11.</b>
                        
                        第十一节：检测内容安全
                    </a>
            
            
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        <li class="chapter " data-level="6.12" data-path="di-shi-er-jie-ff1a-yun-han-shu-tu-pian-jian-huang.html">
            
                
                    <a href="../di-shi-er-jie-ff1a-yun-han-shu-tu-pian-jian-huang.html">
                
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                            <b>6.12.</b>
                        
                        第十二节：图片鉴黄
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        <li class="chapter " data-level="6.13" data-path="di-shi-san-jie-ff1a-yong-hu-shou-quan.html">
            
                
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                            <b>6.13.</b>
                        
                        第十三节：用户授权
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                            <b>6.14.</b>
                        
                        第十四节：其他授权方式
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        <a href="../" >微信小程序</a>
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                        <h1 id="app&#x751F;&#x547D;&#x5468;&#x671F;">App&#x751F;&#x547D;&#x5468;&#x671F;</h1>
<p>&#x8BF7;&#x53C2;&#x8003;&#xFF1A;<a href="https://developers.weixin.qq.com/miniprogram/dev/framework/app-service/app.html" target="_blank">https://developers.weixin.qq.com/miniprogram/dev/framework/app-service/app.html</a></p>
<h2 id="onlaunchoptions&#xFF1A;">onLaunch(options)&#xFF1A;</h2>
<ol>
<li><p>&#x8C03;&#x7528;&#x65F6;&#x673A;&#xFF1A;&#x5C0F;&#x7A0B;&#x5E8F;&#x88AB;&#x52A0;&#x8F7D;&#x5B8C;&#x6BD5;&#x7684;&#x65F6;&#x5019;&#x8C03;&#x7528;&#x3002;&#x8FD9;&#x4E2A;&#x65B9;&#x6CD5;&#x4E00;&#x822C;&#x7528;&#x6765;&#x505A;&#x4E00;&#x4E9B;&#x521D;&#x59CB;&#x5316;&#x7684;&#x4E8B;&#x60C5;&#x3002;&#x6BD4;&#x5982;&#x83B7;&#x53D6;&#x7528;&#x6237;&#x4FE1;&#x606F;&#x3001;&#x83B7;&#x53D6;&#x5386;&#x53F2;&#x7F13;&#x5B58;&#x4FE1;&#x606F;&#x3001;&#x83B7;&#x53D6;&#x5C0F;&#x7A0B;&#x5E8F;&#x6253;&#x5F00;&#x6765;&#x6E90;&#x7B49;&#x3002;</p>
</li>
<li><p>&#x53C2;&#x6570;&#xFF1A;</p>
<p>| &#x53C2;&#x6570; | &#x7C7B;&#x578B; | &#x8BF4;&#x660E; |
| :--- | :--- | :--- |
| path | String | &#x6253;&#x5F00;&#x5C0F;&#x7A0B;&#x5E8F;&#x7684;&#x8DEF;&#x5F84; |
| query | Object | &#x6253;&#x5F00;&#x5C0F;&#x7A0B;&#x5E8F;&#x7684;query |
| scene | Number | &#x6253;&#x5F00;&#x5C0F;&#x7A0B;&#x5E8F;&#x7684;&#x573A;&#x666F;&#x503C; |
| shareTicket | String | shareTicket&#xFF0C;&#x8BE6;&#x89C1; &#x83B7;&#x53D6;&#x66F4;&#x591A;&#x8F6C;&#x53D1;&#x4FE1;&#x606F; |
| referrerInfo | Object | &#x5F53;&#x573A;&#x666F;&#x4E3A;&#x7531;&#x4ECE;&#x53E6;&#x4E00;&#x4E2A;&#x5C0F;&#x7A0B;&#x5E8F;&#x6216;&#x516C;&#x4F17;&#x53F7;&#x6216;App&#x6253;&#x5F00;&#x65F6;&#xFF0C;&#x8FD4;&#x56DE;&#x6B64;&#x5B57;&#x6BB5; |
| referrerInfo.appId | String | &#x6765;&#x6E90;&#x5C0F;&#x7A0B;&#x5E8F;&#x6216;&#x516C;&#x4F17;&#x53F7;&#x6216;App&#x7684; appId&#xFF0C;&#x8BE6;&#x89C1;&#x4E0B;&#x65B9;&#x8BF4;&#x660E; |
| referrerInfo.extraData | Object | &#x6765;&#x6E90;&#x5C0F;&#x7A0B;&#x5E8F;&#x4F20;&#x8FC7;&#x6765;&#x7684;&#x6570;&#x636E;&#xFF0C;scene=1037&#x6216;1038&#x65F6;&#x652F;&#x6301; |</p>
</li>
</ol>
<h2 id="onshowoptions&#xFF1A;">onShow(options)&#xFF1A;</h2>
<ol>
<li>&#x8C03;&#x7528;&#x65F6;&#x673A;&#xFF1A;&#x5C0F;&#x7A0B;&#x5E8F;&#x542F;&#x52A8;&#xFF0C;&#x6216;&#x4ECE;&#x540E;&#x53F0;&#x8FDB;&#x5165;&#x524D;&#x53F0;&#x663E;&#x793A;&#x65F6;&#x8C03;&#x7528;&#x3002;&#x5982;&#x679C;&#x60F3;&#x8981;&#x5728;&#x5C0F;&#x7A0B;&#x5E8F;&#x6BCF;&#x6B21;&#x8FDB;&#x5165;&#x5230;&#x524D;&#x53F0;&#x7684;&#x65F6;&#x5019;&#x90FD;&#x6267;&#x884C;&#x4E00;&#x4E9B;&#x4E8B;&#x60C5;&#xFF0C;&#x90A3;&#x4E48;&#x53EF;&#x4EE5;&#x628A;&#x4EE3;&#x7801;&#x653E;&#x5728;&#x8FD9;&#x4E2A;&#x91CC;&#x9762;&#x3002;&#x6BD4;&#x5982;&#x4E00;&#x4E9B;&#x5B9E;&#x65F6;&#x52A8;&#x6001;&#x66F4;&#x6539;&#x7684;&#x6570;&#x636E;&#xFF0C;&#x7528;&#x6237;&#x6BCF;&#x6B21;&#x8FDB;&#x6765;&#x90FD;&#x8981;&#x4ECE;&#x670D;&#x52A1;&#x5668;&#x66F4;&#x65B0;&#xFF0C;&#x90A3;&#x4E48;&#x6211;&#x4EEC;&#x5C31;&#x53EF;&#x4EE5;&#x5728;&#x8FD9;&#x4E2A;&#x91CC;&#x9762;&#x505A;&#x3002;</li>
<li>&#x53C2;&#x6570;&#xFF1A;&#x540C;<code>onLoad</code>&#x3002;</li>
</ol>
<h2 id="onhide&#xFF1A;">onHide()&#xFF1A;</h2>
<ol>
<li>&#x8C03;&#x7528;&#x65F6;&#x673A;&#xFF1A;&#x5C0F;&#x7A0B;&#x5E8F;&#x88AB;&#x5207;&#x6362;&#x5230;&#x540E;&#x53F0;&#xFF08;&#x5305;&#x62EC;&#x5FAE;&#x4FE1;&#x81EA;&#x8EAB;&#x88AB;&#x5207;&#x6362;&#x5230;&#x540E;&#x53F0;&#x6216;&#x8005;&#x5C0F;&#x7A0B;&#x5E8F;&#x6682;&#x65F6;&#x88AB;&#x5207;&#x6362;&#x5230;&#x540E;&#x53F0;&#x65F6;&#xFF09;&#x3002;&#x53EF;&#x4EE5;&#x5728;&#x8FD9;&#x4E2A;&#x65B9;&#x6CD5;&#x4E2D;&#x505A;&#x4E00;&#x4E9B;&#x6570;&#x636E;&#x7684;&#x4FDD;&#x5B58;&#x3002;</li>
<li>&#x53C2;&#x6570;&#xFF1A;&#x65E0;&#x3002;</li>
</ol>
<h2 id="onerrorstring-error&#xFF1A;">onError(String error)&#xFF1A;</h2>
<ol>
<li>&#x8C03;&#x7528;&#x65F6;&#x673A;&#xFF1A;&#x5C0F;&#x7A0B;&#x5E8F;&#x53D1;&#x751F;&#x811A;&#x672C;&#x9519;&#x8BEF;&#xFF0C;&#x6216;&#x8005; api &#x8C03;&#x7528;&#x5931;&#x8D25;&#x65F6;&#x89E6;&#x53D1;&#x3002;&#x5728;&#x5C0F;&#x7A0B;&#x5E8F;&#x53D1;&#x751F;&#x9519;&#x8BEF;&#x7684;&#x65F6;&#x5019;&#xFF0C;&#x4F1A;&#x628A;&#x9519;&#x8BEF;&#x4FE1;&#x606F;&#x53D1;&#x9001;&#x5230;&#x8FD9;&#x4E2A;&#x51FD;&#x6570;&#x4E2D;&#xFF0C;&#x6240;&#x4EE5;&#x53EF;&#x4EE5;&#x5728;&#x8FD9;&#x4E2A;&#x51FD;&#x6570;&#x4E2D;&#x505A;&#x4E00;&#x4E9B;&#x9519;&#x8BEF;&#x6536;&#x96C6;&#x3002;</li>
<li>&#x53C2;&#x6570;&#xFF1A;error&#x3002;</li>
</ol>
<h2 id="onpagenotfoundobject&#xFF1A;">onPageNotFound(Object)&#xFF1A;</h2>
<ol>
<li>&#x8C03;&#x7528;&#x65F6;&#x673A;&#xFF1A;&#x5C0F;&#x7A0B;&#x5E8F;&#x8981;&#x6253;&#x5F00;&#x7684;&#x9875;&#x9762;&#x4E0D;&#x5B58;&#x5728;&#x65F6;&#x89E6;&#x53D1;&#x3002;&#x4E00;&#x822C;&#x5728;&#x4EE3;&#x7801;&#x66F4;&#x65B0;&#x7684;&#x65F6;&#x5019;&#xFF0C;&#x6709;&#x4E9B;&#x9875;&#x9762;&#x88AB;&#x5220;&#x9664;&#x4E86;&#xFF0C;&#x4F46;&#x662F;&#x5176;&#x4ED6;&#x5730;&#x65B9;&#x6CA1;&#x6709;&#x6539;&#x8FC7;&#x6765;&#x7684;&#x60C5;&#x51B5;&#x4E0B;&#x4F1A;&#x53D1;&#x751F;&#x8FD9;&#x79CD;&#x60C5;&#x51B5;&#xFF0C;&#x6216;&#x8005;&#x4E00;&#x4E9B;&#x6D3B;&#x52A8;&#x9875;&#x9762;&#xFF0C;&#x6D3B;&#x52A8;&#x7ED3;&#x675F;&#x540E;&#x88AB;&#x5173;&#x6389;&#x4E86;&#x3002;&#x4E5F;&#x53EF;&#x4EE5;&#x5728;&#x8FD9;&#x4E2A;&#x91CC;&#x9762;&#x505A;&#x4E00;&#x4E9B;&#x9519;&#x8BEF;&#x7684;&#x6536;&#x96C6;&#x548C;&#x9875;&#x9762;&#x7684;&#x91CD;&#x65B0;&#x8DF3;&#x8F6C;&#x3002;</li>
<li><p>&#x53C2;&#x6570;&#xFF1A;</p>
<p>| &#x5B57;&#x6BB5; | &#x7C7B;&#x578B; | &#x8BF4;&#x660E; |
| :--- | :--- | :--- |
| path | String | &#x4E0D;&#x5B58;&#x5728;&#x9875;&#x9762;&#x7684;&#x8DEF;&#x5F84; |
| query | Object | &#x6253;&#x5F00;&#x4E0D;&#x5B58;&#x5728;&#x9875;&#x9762;&#x7684; query |
| isEntryPage | Boolean | &#x662F;&#x5426;&#x672C;&#x6B21;&#x542F;&#x52A8;&#x7684;&#x9996;&#x4E2A;&#x9875;&#x9762;&#xFF08;&#x4F8B;&#x5982;&#x4ECE;&#x5206;&#x4EAB;&#x7B49;&#x5165;&#x53E3;&#x8FDB;&#x6765;&#xFF0C;&#x9996;&#x4E2A;&#x9875;&#x9762;&#x662F;&#x5F00;&#x53D1;&#x8005;&#x914D;&#x7F6E;&#x7684;&#x5206;&#x4EAB;&#x9875;&#x9762;&#xFF09; |</p>
</li>
<li><p>&#x5F00;&#x53D1;&#x8005;&#x53EF;&#x4EE5;&#x5728; onPageNotFound &#x56DE;&#x8C03;&#x4E2D;&#x8FDB;&#x884C;&#x91CD;&#x5B9A;&#x5411;&#x5904;&#x7406;&#xFF0C;&#x4F46;&#x5FC5;&#x987B;&#x5728;&#x56DE;&#x8C03;&#x4E2D;&#x540C;&#x6B65;&#x5904;&#x7406;&#xFF0C;&#x5F02;&#x6B65;&#x5904;&#x7406;&#xFF08;&#x4F8B;&#x5982; setTimeout &#x5F02;&#x6B65;&#x6267;&#x884C;&#xFF09;&#x65E0;&#x6548;&#x3002;&#x793A;&#x4F8B;&#x4EE3;&#x7801;&#xFF1A;</p>
<pre><code class="lang-js">     App({
       onPageNotFound(res) {
         wx.redirectTo({
           url: <span class="hljs-string">&apos;pages/...&apos;</span>
         }) <span class="hljs-comment">// &#x5982;&#x679C;&#x662F; tabbar &#x9875;&#x9762;&#xFF0C;&#x8BF7;&#x4F7F;&#x7528; wx.switchTab</span>
       }
     })
</code></pre>
</li>
<li><p>&#x6CE8;&#x610F;&#xFF1A;&#x5982;&#x679C;&#x5F00;&#x53D1;&#x8005;&#x6CA1;&#x6709;&#x6DFB;&#x52A0; onPageNotFound &#x76D1;&#x542C;&#xFF0C;&#x5F53;&#x8DF3;&#x8F6C;&#x9875;&#x9762;&#x4E0D;&#x5B58;&#x5728;&#x65F6;&#xFF0C;&#x5C06;&#x63A8;&#x5165;&#x5FAE;&#x4FE1;&#x5BA2;&#x6237;&#x7AEF;&#x539F;&#x751F;&#x7684;&#x9875;&#x9762;&#x4E0D;&#x5B58;&#x5728;&#x63D0;&#x793A;&#x9875;&#x9762;&#x3002;
&#x5982;&#x679C; onPageNotFound &#x56DE;&#x8C03;&#x4E2D;&#x53C8;&#x91CD;&#x5B9A;&#x5411;&#x5230;&#x53E6;&#x4E00;&#x4E2A;&#x4E0D;&#x5B58;&#x5728;&#x7684;&#x9875;&#x9762;&#xFF0C;&#x5C06;&#x63A8;&#x5165;&#x5FAE;&#x4FE1;&#x5BA2;&#x6237;&#x7AEF;&#x539F;&#x751F;&#x7684;&#x9875;&#x9762;&#x4E0D;&#x5B58;&#x5728;&#x63D0;&#x793A;&#x9875;&#x9762;&#xFF0C;&#x5E76;&#x4E14;&#x4E0D;&#x518D;&#x56DE;&#x8C03; onPageNotFound&#x3002;</p>
</li>
</ol>
<h2 id="getapp&#xFF1A;">getApp()&#xFF1A;</h2>
<p>&#x83B7;&#x53D6;&#x5F53;&#x524D;&#x7684;<code>app</code>&#x5BF9;&#x8C61;&#x3002;&#x4E00;&#x822C;&#x5728;&#x5176;&#x4ED6;&#x7684;<code>page</code>&#x9875;&#x9762;&#x4E2D;&#x8C03;&#x7528;&#x3002;&#x6709;&#x4EE5;&#x4E0B;&#x4E24;&#x4E2A;&#x6CE8;&#x610F;&#x70B9;&#xFF1A;  </p>
<ol>
<li>&#x4E0D;&#x8981;&#x5728;&#x5B9A;&#x4E49;&#x4E8E; App() &#x5185;&#x7684;&#x51FD;&#x6570;&#x4E2D;&#x8C03;&#x7528; getApp() &#xFF0C;&#x4F7F;&#x7528; this &#x5C31;&#x53EF;&#x4EE5;&#x62FF;&#x5230; app &#x5B9E;&#x4F8B;&#x3002;  </li>
<li>&#x901A;&#x8FC7; getApp() &#x83B7;&#x53D6;&#x5B9E;&#x4F8B;&#x4E4B;&#x540E;&#xFF0C;&#x4E0D;&#x8981;&#x79C1;&#x81EA;&#x8C03;&#x7528;&#x751F;&#x547D;&#x5468;&#x671F;&#x51FD;&#x6570;&#x3002;</li>
</ol>

                    
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